Hi JM and Sue,
WOW you have been busy and a lot to take in.
So need to review,
JM I think the confusion with 2 and 3 children on Mellish is to do with Humphrey being born on board or about to be born. What do you both think?
Also I think we are getting confused with two sons due to the middle name Collier. I think Charles Collier Cates was born in England and came over on Mellish, I need to find his birth in UK and try and work out the Collier link.
George Collier Cates was then born in NSW in 1840.
So for Charles Collier Cates we have
Born Uk, Came to Australia 1839, have a feeling he didn't return to Uk in 1850 on Mary White but could have.
Between 1850 and 1865 he gets married somewhere and wife dies and he ends up in Ireland in 1865 when he marries Annabel Flood.
(1867 marriage in dublin cant be right, the female Cates who married cant be daughter of both Charles and Annabel, (even they cant produce that quickly)

Charles daughter from prev marriage or Annabel daughter who took Cates name.)
Between 1865 and 1873 Charles makes his way to New Zealand and marries Annie Buchanan on 22/5/1873 probably bigamously.
Then in 1888 marries Sarah Woodward in Goulborn and has daughter Elizabeth 1889 in Newcastle and son Charles Augustus 1890 who says he born in Dunedin NZ when he enlists in 1915.
As we cant pin Charles down in late 80's /early 90's I think he travelling around NA/AUS perhaps still trying to sell his Conqueror Washing Powder until it all goes wrong and he ends up insolvent and then dies in 1893 in Glebe, Sydney.
Sarah remarries 1893.
Elizabeth and Charles A put in asylum 1895.
What do you both think of above?